A new class of low molecular-mass organogelators (LMOGs) that form thermally reversible organogels with partially or completely fluorinated liquids is reported. The LMOGs are perfluoroalkyl amides, F(CF₂)_nCONH(CH₂)_mH. The incompatibility of the fluorocarbon and hydrocarbon segments causes the molecules to aggregate, probably into lamellae. Gelation properties of these LMOGs, with a long or short alkyl chain and where the length of the perfluoroalkyl chain is varied, have been examined in different fluorinated liquids. Analyses of these results and structure/solvent correlations will be provided.

F(CF₂)_nCONH(CH₂)_mH                                        F(CF₂)_nCO₂(CH₂)_mH

n                      m                                                         n                      m

7                      3, 10, 18                                             11                    3, 18

11                    2, 3, 4, 6, 8